\documentclass[12pt, oneside, landscape]{memoir}

\newif\ifblackandwhite
% \blackandwhitetrue


\usepackage{fontspec}%
\defaultfontfeatures{Ligatures=TeX}%
\setmainfont[%
   Numbers        = OldStyle ,
   ItalicFont     = LinLibertineOI ,
   BoldItalicFont = LinLibertineOBI ,
   BoldFont       = LinLibertineOB ,
]{LinLibertineO}%


\usepackage[hmargin=2cm,vmargin=2.5cm]{geometry}
\usepackage{etoolbox}
\usepackage{longtable}%
\AtBeginEnvironment{longtable}{%
  \addfontfeature{RawFeature=+tnum;-onum}%  <--- requires LuaTeX
}

\usepackage{pdflscape}
\usepackage[svgnames]{xcolor}
\usepackage{colortbl}%
  \newcommand{\myrowcolour}{\rowcolor[gray]{0.925}}
\usepackage{booktabs}

\ifblackandwhite
  \newcommand{\cheading}[2]{\textbf{#1\hfill #2}}
  \newcommand{\highest}[1]{\textbf{#1}}% == highest score for question
\else
  \newcommand{\cheading}[2]{\textcolor{Maroon}{\textbf{#1\hfill #2}}}
  \newcommand{\highest}[1]{\textcolor{Maroon}{\textbf{#1}}}%
\fi



\begin{document}
\thispagestyle{empty}
\parindent0pt
%

\cheading{Fake Course Evaluation Summary for \textsc{course
    1234y}}{Sept.\ 2010 --- May 2011}

\begin{longtable}{@{}l rr rr rr rr rr rr}
% pairs: absolute number (percentage)

\toprule%
 \centering%
 & \multicolumn{2}{c}{{{\bfseries Excellent}}}
 & \multicolumn{2}{c}{{{\bfseries Very Good}}}
 & \multicolumn{2}{c}{{{\bfseries Good}}}
 & \multicolumn{2}{c}{{{\bfseries Average}}}
 & \multicolumn{2}{c}{{{\bfseries Poor}}}
 & \multicolumn{2}{c}{{{\bfseries Very Poor}}} \    

\cmidrule[0.4pt](r{0.125em}){1-1}%
\cmidrule[0.4pt](lr{0.125em}){2-3}%
\cmidrule[0.4pt](lr{0.125em}){4-5}%
\cmidrule[0.4pt](lr{0.125em}){6-7}%
\cmidrule[0.4pt](lr{0.125em}){8-9}%
\cmidrule[0.4pt](lr{0.125em}){10-11}%
\cmidrule[0.4pt](l{0.25em}){12-13}%
% \midrule
\endhead


Some question about the Instructor or Course & 2 & (7.14) & 4 &
(14.29) & \highest{12} & \highest{(42.86)} & 4
& (14.29) & 6 & (21.43) & 0 & (0.00) \    
\myrowcolour%
Some question about the Instructor or Course & 3 & (10.71) &
\highest{15} & \highest{(53.57)} & 5 & (17.86) & 5 & (17.86) & 0 &
(0.00) & 0 & (0.00) \    
Some question about the Instructor or Course & 4 & (14.29) & 8 &
(28.57) & \highest{15}
& \highest{(53.57)} & 1 & (3.57) & 0 & (0.00) & 0 & (0.00) \    
\myrowcolour%
Some question about the Instructor or Course & 3 & (10.71) & 8 &
(28.57) & \highest{10} & \highest{(35.71)}
& 5 & (17.86) & 2 & (7.14) & 0 & (0.00) \    
Some question about the Instructor or Course & 6 & (21.43) &
\highest{9} & \highest{(32.14)}
& 4 & (14.29) & \highest{9} & \highest{(32.14)} & 0 & (0.00) & 0 & (0.00) \    
\myrowcolour%
Some question about the Instructor or Course & \highest{10} &
\highest{(35.71)} & \highest{10} & \highest{(35.71)}
& 3 & (10.71) & 5 & (17.86) & 0 & (0.00) & 0 & (0.00) \    
Some question about the Instructor or Course & \highest{12} &
\highest{(42.86)} & \highest{12} & \highest{(42.86)} & 3
& (10.71) & 1 & (3.57) & 0 & (0.00) & 0 & (0.00) \    
\myrowcolour%
Some question about the Instructor or Course & \highest{12} &
\highest{(42.86)} & 3 & (10.71) & 7
& (25.00) & 5 & (17.86) & 1 & (3.57) & 0 & (0.00) \    
Some question about the Instructor or Course & \highest{10} &
\highest{(35.71)} & 6 & (21.43) & 6 & (21.43) & 6 & (21.43)
& 1 & (3.57) & 0 & (0.00) \    
\myrowcolour%
Some question about the Instructor or Course & 5 & (17.86) & 5 &
(17.86) & \highest{12} & \highest{(42.86)} & 2 & (7.14)
& 3 & (10.71) & 1 & (3.57)\    
Some question about the Instructor or Course & 3 & (10.71) & 8 &
(28.57) & \highest{11} & \highest{(39.29)} & 3 & (10.71) & 3 & (10.71)
& 0 & (0.00) \    
\myrowcolour%
Some question about the Instructor or Course & \highest{18} &
\highest{(64.29)}
& 5 & (17.86) & 3 & (10.71) & 1 & (3.57) & 1 & (3.57) & 0 & (0.00) \    
Some question about the Instructor or Course & \highest{15} &
\highest{(53.57)}
& 7 & (25.00) & 2 & (7.14) & 2 & (7.14) & 2 & (7.14) & 0 & (0.00) \    
\myrowcolour%
Some question about the Instructor or Course & 3 & (10.71) &
\highest{13} & \highest{(46.43)} & 4 & (14.29) & 6 & (21.43) & 2
& (7.14) & 0 & (0.00) \    
\bottomrule

\end{longtable}

\end{document}
